Being in shape was not their strong suit. These wrestlers used (or still use) their smarts, personality and just plain bulk to get their way in the ring.
Let's just be honest about this—these wrestlers were or are FAT. They never shied away from the dinner table and staying in shape may not have been their strong suit. Heck, some of them, well most of them, used the weight and and size as part of their gimmick and success.
These are the fattest wrestlers to ever get in the ring.
And in most cases, their size and lack of fitness brought them great pride and success.